#include <stdio.h>
#include <conio.h>
#include <math.h>

using namespace std;

int main()
{
 const float eps=1.0e-6;
 float x=0;
 scanf("%f",&x);
 if(fabs(x)<eps)
 {
  printf("signum(%f)=0",x);
 }
 else if(x>=eps)
 {
  printf("signum(%f)=1",x);
 }
 else
  printf("signum(%f)=-1",x);
  
  getche();
  return 0;
}    
